feat(client): add Pagination component and integrate with Table and pages

- add Pagination component with prev/next, ellipsis page range, and optional page-size selector
- add Pagination and Table pagination stories (WithPagination, WithPaginationAndSizeSelector)
- extend Table with optional pageSize and pageSizeOptions props for built-in client-side pagination
- add Timestamp column to Table story fixtures
- enable pagination on all four pages with pageSize=10 and size selector
- add pagination i18n keys to en.json

client/.storybook/stories/Pagination.stories.tsx

@@ -0,0 +1,56 @@
+import type { Meta, StoryObj } from '@storybook/react-vite';
+import { useState } from 'react';
+import { Pagination } from '../../src/ui/Pagination/Pagination';
+
+const meta: Meta<typeof Pagination> = {
+  title: 'UI/Pagination',
+  component: Pagination,
+  parameters: { layout: 'padded' },
+  tags: ['autodocs'],
+};
+export default meta;
+type Story = StoryObj<typeof Pagination>;
+
+function Controlled(args: React.ComponentProps<typeof Pagination>) {
+  const [page, setPage] = useState(args.page);
+  const [pageSize, setPageSize] = useState(args.pageSize);
+  return (
+    <Pagination
+      {...args}
+      page={page}
+      pageSize={pageSize}
+      onPageChange={setPage}
+      onPageSizeChange={args.onPageSizeChange ? setPageSize : undefined}
+    />
+  );
+}
+
+export const FewPages: Story = {
+  render: (args) => <Controlled {...args} />,
+  args: { page: 1, pageSize: 10, total: 30 },
+};
+
+export const ManyPages: Story = {
+  render: (args) => <Controlled {...args} />,
+  args: { page: 5, pageSize: 10, total: 200 },
+};
+
+export const LastPage: Story = {
+  render: (args) => <Controlled {...args} />,
+  args: { page: 20, pageSize: 10, total: 200 },
+};
+
+export const SinglePage: Story = {
+  render: (args) => <Controlled {...args} />,
+  args: { page: 1, pageSize: 10, total: 7 },
+};
+
+export const WithPageSizeSelector: Story = {
+  render: (args) => <Controlled {...args} />,
+  args: {
+    page: 1,
+    pageSize: 10,
+    total: 150,
+    onPageSizeChange: () => {},
+  },
+};